Seaming mechanism



P. H. LANGE SEAMING MECHANI SM April 2, 1935.

Filed June l5, 1955 2 Sheets-Sheet 1 ATTORNEY mf T.

w ma l H M P April 2, 1935. P. H. LANGE 1,996,381

SEAMING MECHANISM Filed June 15,. 1935 l 2v sheets-sheet 2 Y Y f J 5 i Patentedl Apr. 2, 1935 UNITED STATES sEAM'mG MECHANTSM Paul H. Lange.' Bridgeport, Conn.

Application June 15, 1933, Serial No. 675,898

claims.

'I'his invention relates to new and useful improvements in seaming mechanism and has particular although not exclusive relation to a seaming mechanism employing a plurality of first op- 5 eration seaming tools and a plurality of second operation seaming tools. y

The invention provides a simple and compact structure of seaming mechanisms and a mechanism which is well balanced whereby vibration and wear are reduced. Also, the invention in- I cludes certain details of construction as will later be fully set forth.

While in the accompanying drawings and following description the details of one satisfactory embodiment of the invention are fully set forth it is to be understood that the invention is not limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and the scope of the appended claims.

In the drawings:

Fig. 1 is a bottom plan view of a seaming head constructed according to the invention;

Fig. 2 is a vertical sectional view taken substantially alongv the plane of4 the line 2--2 of Fig. 1;

Fig. 3 is a vertical sectional view taken substantially along the plane of the line 3-3 of Fig. 1;

Fig. 4 is a vertical sectional view taken substantially along the plane of the line 4 4 of i Fig. 1;

Fig. 5 is a bottom plan view o'f cams;

Fig. 6 is a detail side elevational view showing the mounting for a cam roller;

Fig. `7 is a detail sectional view taken substantially along the plane of the line 1-1 of Fig. 2; f

Fig. 8 is a top plan view of an eccentric seaming roller mounting spindle employed; and

Fig. 9 is a side view of the pin ofzFig. 8, a part being broken away.

Referring in detail to the drawings, the improved seaming mechanism includes a head generally designated I0 and comprising a disc-like portion II which at its outer edge carries an upstanding flange I2. A chuck I3 of any or the yusual construction is provided to hold the work land such chuck is mounted on a stationary shaft I4 extending through a tubularmember or sleeve I5 connected to or integral with the member Il. Any suitable means may be used for rotating the sleeve I5 and the motion of such sleeve will, of Vcourse, be imparted to the disc-like portion II and the various means carried thereby which means will later be more fully referred to.

Depending from the disc-like portion II are spaced 'lugs or extensions I6 (see Fig. 4) and secured to these lugs or extensions are four cover the seaming (Cl. .H3-24)' guide members Il. Disposed between two of the cover guide members and .the disc-like portion I I are a pair of seaming tool carriers I8 each in the form of a bell crank. Mounting pins I9 pass through the intermediate portions of the carriers or bell cranksv I8 and said mounting pins are secured in or to the disc-like portion II and the closure I1 as clearly shown in- Fig. 4. From this it will be understood that the carriers or bell cranks are adapted for a rocking movement or turning movement on the pivot pins or bolts I9.l

At each of its ends each carrier I8 mounts a seaming tool. First operation seaming tools 20 are mounted on the diametrically opposite end portions of the bell .cranks while second Ioperation seaming tools 2l are mounted on the other diametrically opposite end portions of the bell cranks. From this it will be understood that the seaming tools are arranged in pairs the toolsdiametrically opposite'each other in each instance constituting a pair. Each seaming tool is mounted for fine adjustments and to accomplish this each tool is mounted on a spindle 22 having an outer end portion 23l and an inner end portion 24 which end portions are eccentric with respect to one another as clearly shown in Figs. 8 and 9. The inner end portion 24 of each vspindle is received in an opening in the carrier I8 while the outer end portion of each spindle mounts a seaming tool.

Each spindle is provided with a .flange like portion or collar 25 having openings 25A therein for the reception of a pin 'or Spanner wrench or the like whereby the spindle may be slightly rotated to adjust the position of the seaming tool carried by it. Associated with the inner end portion of each of the spindles 22 is a key 26 which extends Afor substantially the length of the said inner end portion of the spindle. Extending through the carrier transversely with respect to each key is a bolt 21 and each of said bolts includes an inclined edge portion 28 (see Fig. 7). The arrangement is such that on the tightening of the nut 29 of the bolt the inclined surface of that bolt will be drawn against the key 26 with which the bolt is associated and said key will bepforced against the inner end portion ofthat spindle associated with the key. It will, therefore, be understood that on loosening of a nut 29 the spindle associated'with said nut may be adjusted toadjust the position of a seaming tool on saidspindle and thereafter on tightening of the nut the key.26 will be jammed against the spindle locking the latter and its seaming tool in adjusted position. The lmeans disclosed is inexpensive and very effective for the purpose intended and since the spindle is. engaged over a large area it will not be damaged.

30 in each instance is a carrier, on which a cam roller 3| or 32 is mounted, and itI will be noted that said carriers extend through cutaway portions I6 of the disc-like portion II above referred to. Each carrier 30 is connected with or attached to one of the bell cranks I8 as by means of a bolt 33 and there is interposed between the carrier and the bell crank a resilient or yielding member such as a spring 34 so that when tle second operation seaming tools lpass over the side seam of a can the said tools may yield slightly without transmitting the strain to the cam rollers.

The cam rollers are located above the upper surface of the disc-like portion II of the seaming head and withinthe ange I2 of said head there is arranged a cam member 35 having a tubular portion 35A by which it may be driven. As clearly shown in Fig. 2 the cam member 35 receives the cam rollers 3| and 32 and it is noted that said cam rollers are mounted as on pins 36 extending vertically from the carriers- 3II.` It will be noted that the rollers y3I and 32 are reversed with respect to one another whereby to properly cooperate Withthe cams of the carrier 35 as will be set forth.

Cam member. 35 is provided with a track or groove 31 containing cams 38, 39, 40 and 4I of which cams 38 and 39 form one pair while cams I0 and II form the other pair. The cam 39 is arranged in vertically spaced relation to the cam 38 and the c'am 4I bears the same relation to the cam 40 as does the cam 39 to the cam 38. Therefore, as the machine is operated when one cam roller is in engagement with the cam 38 the other cam roller is in engagement with the cam 39. As the rollers ride up on these cams the bell cranks I8 are rocked on their pivots I9 whereby the rst operation seaming tools are carried in against the work and the second operation seaming tools are moved outwardly from a neutral position. As is customary in machines of this character the seaming head and the seaming cams are given a relative rotating motion.

As the machine progresses the cam rollers move olf the cams 38 and 39 so that the seaming tools all occupy neutral positions and next the cam rollers ride onto the cams 40 and 4I whereby the second operation seaming tools arev carried in against the workvwhile the rst operation tools are swung outwardly from neutral positions. From this it will be understood that as the first operation seaming tools move inwardly to operative position the second operation tools move outwardly and as the first operation'seaming tools move outwardly from the work the second operation seaming toolsvare moved against the work. 'I'he cams positively operate the bell cranks in both directions and since each bell crankcarries a tool at each of its ends themovement of one tool in one direction is balanced by a movement of the other tool in the opposite direction so that there is no tendency to throw the machine off balance and cause it to wobble or vibrate and rapidly Wear. Y i

Having thus set forth the nature of my invention, what I claim is:

1. In a seaming mechanism, a seaming tool carrier having an opening therein, a seaming tool spindle, said spindle including inner and outer end portions, a seaming tool on the outer end portion of said spindle, said spindle having its inner and outer end portions eccentric with respect to one another, said spindle having its inner end portion extending into the opening in the carrier,

a key in said opening in the carrier and extending longitudinally of the spindle, and means extending transversely of and in engagement with the key intermediate the ends thereof and operable to force the key against the inner end portion of the spindle to lock the spindle in adjusted position relative to the carrier.

2. In a seaming mechanism, a seaming tool carrier having an opening therein, a seaming tool spindle, said spindle including inner and outer end portions, a seaming'tool on the outer end portion of said spindle, said spindle having its inner and outer end portions eccentric with respect to one another, said spindle having its inner end portion extending into the opening in the carrier, a key in said opening along one side thereof and extending longitudinally of and engaging the inner end portion of the spindle over a substantial portionof its length, said key having a at side, a wedge means extending transversely of said key and having a flat side engaging the iiat side of the key intermediate the ends thereof,

and means to draw said wedge transversely of the key to cause it to force the key against the inner end portion of the spindle to lock the latter in adjusted position in the carrier.

3. In a seaming mechanism, a head, a pair of seaming tool carriers each comprising a bell crank, means pivoting said bell cranks substantially midway their lengths to said head at substantially diametrically opposite points on the head, a plurality of seaming tools, means mounting one of said tools on each end portion of each of said bell cranks whereby the tools diametrically opposite each other form pairs, a cam roller directly on the upper side of each of said bell cranks in'spaced relation to and independent of its `pivot means,'and a cam immediately above said bell cranks and having a groove receiving said cam rollers to turn the bell cranks on their pivots.

4. In a seaming mechanism, a head, a pair of seaming tool carriers each comprising an elongated rigid member, means pivoting said members substantially midway their lengths to the head at,

substantially diametrically opposite points on the latter, four seaming tools, means mounting one of said tools on each end portion of each of said members whereby the tools diametrically opposite. each other form pairs, a cam roller directly on the upper side of and at one end portion of each of said carriers and independent of the pivot means of the latter and cam means immediately above and engaging said rollers to rock the carriers to alternately move the pairs of tools toward and from the work.

5. In a seaming mechanism, a head, a pair of seaming tool carriers each comprising an elongated rigid member, means pivoting said members midway their lengths to the head at substantially diametrically opposite points on the head, a plurality of seaming tools, means mounting one of said tools on each end portion of each of said members whereby the tools diametrically opposite each other form pairs, a cam roller directly on the upper side of and at one end portion of each of said carriers and independent of the pivot means of the latter, cams directly above and engaging said rollers to rock the carriers to alternately move the pairs of tools toward and from the work, and said cams constructed and arranged to operate said members positively in each direction about their pivots.

PAUL H. LANGE. 

